Hi Kees, > 1. frexp.c is not needed, as Visual Studio already provides frexp() > function via system libraries.
The configure log says: checking whether frexp works... guessing no ... checking whether frexpl works... guessing no Why "guessing"? Apparently AC_RUN_IFELSE refuses to run the test program when compiling to mingw on a Cygwin host. Argh. But it's documented in doc/posix-functions/frexp.texi https://www.gnu.org/software/gnulib/manual/html_node/frexp.html Do you have data that shows that MSVC14's frexp() behaves better than the one in MSVC 9? > 2. memchr.c is not needed, as Visual Studio already provides memchr() > function via system libraries. The configure log says: checking whether memchr works... guessing no Again the AC_RUN_IFELSE problem. > 3. gzip.c/h, util.c: the strlwr() function conflicts with Visual Studio > one. Added HAVE_STRLWR define in config.h and omit implementation + prototype. That makes you depend on what Microsoft happens to implement in its library. https://msdn.microsoft.com/en-us/library/ms235455.aspx > 4. lseek.c: need to include winsock2.h before including windows.h I'm not observing this problem with building this gzip snapshot. > 5. utimens.c: need to include sys/times.c on Windows to get struct > utimbuf + need to define HAVE_STRUCT_UTIMBUF in config.h + Likewise: I'm not observing this problem. > 7. config.h (stored in clearcase as config_win32.h): added typedefs for > uid_t and gid_t. config.h is autogenerated with my README.windows instructions. > 9. util.c/xalloc-die.c: both contain a xalloc_die() function. I guess > this is intentionally? The one in util.c is meant to override the one from gnulib. This is normally achieved by having the gnulib code linked as a library. My build attempt aborted like this: C:\cygwin64\home\bruno\gzip-1.8.18-00e6\gzip.c(1900): error C2146: syntax error: missing ')' before identifier 'uid' C:\cygwin64\home\bruno\gzip-1.8.18-00e6\gzip.c(1900): error C2081: 'uid_t': name in formal parameter list illegal C:\cygwin64\home\bruno\gzip-1.8.18-00e6\gzip.c(1900): error C2061: syntax error: identifier 'uid' Indeed all uses of uid_t and gid_t need to be revisited when porting to native Windows. Bruno
